Drying plant



P. BARDUCCI Dec. 15, 1925 DRYING PLANT 2 Sheets-Sheet l Filed Oct. 8, 1925 [rufe/Prof Pafdacc/ Patented Dec. 15, 192s.

1,566,244 PATENT ortica.

PLADE `BARDU'CCI, OF HILAN, ITALY.

DRYING PLANT.

Application filed October 8, 1923. Serial Ito. 667,382.

To all whom z'tmag/ concern.

Be it known that I, PILADE BAnDUCcI, subject of 'the Kingof Italy, residing at Milan, Italy, and temporarily at Naples, Italy, have invented certain new and useful Improvements in Drying Plants, of which the following is a specification.

The present invention relates to drying plants of the kind'in which the air is agitated by means of propel-lors producing a vertical .air current and caused to travel with respect to the material to be dried;` it has for its object an apparatus by means of which the air is agitated within a room in,l an eicient and even manner, the said appa-.1'

ratus being at the same time of a simple and compact construction.

vIn lants 'of known construction in which the air is agitated by means of propellers free in the room and carried by a travelling carriage, said propellers must have a large diameter and extend substantially throu hout the span or width of the room in or( er to act. evenly on the material locatedin the same; this fact produces the drawback that the air currents producediby such large propellers have a quite different intensity in their several portions and air streams ai'e .directed towards the room walls; further,

in view of the propeller size, the travelling carriage is not steady in its ruiming.

The present invention has for its object an apparatus in w iich said drawbacks are removed.

The apparatus according to the present invention comprises a travelling member or carriage which isprovided with one yor more hopper-shaped or tapering casings 1n each of which is located an air ropeller of comparativel small size. aid casings are elongate in a direction transverse with respect to the carriage path and they are' arranged at the side of each other to extend substantially throu h the whole span or width of the room 1n which' the apparatus is located.

Each propeller is mounted ator near the smaller mouth of its casing for improving thel air How therearound.

On the annexed drawin is illustrated by way of example an embodiment of the resent invention and-Figure 1 is a longitu inal section of a drying chamber provided with an air agitatin apparatus according to the present invention; Figure 2 is a transverse section of the same on line 2-2 of'Figure 1, and on a larger scale; Figure 3 is a plan view of the said ai-r agitatng apparatus and Figure 4 is a transverse section of a room with a modified construction of air agitating apparatus.

In said drawings, 1 is a drying chamber provided with an inlet mouth 2 and an exiaust mouth 3 having an air propeller'4. On .rails 5 located in said room reciprocates an air agitating apparatus hereinafter described, which is adapted to produce a strong air current inl the space iii front of the material to be dried, which is assumed to be located in the space enclosed between chain lines, being thus-subjected-to an intermittent ventilation.

The air agitating apparatus comprises a carriage 7 having wheels 8 for reciprocationon rails 5 and casings 9-9 are located on (if).l

said carriage, each having the Sliapeillus-y trated on the drawing, that is comprising a front and rear walls 14 and sidewalls 15 which are inclined with respect to the'pro- "traine 13 in which is located a propeller 10,

peller axis; each casing has thus a. tapering outline in its transverse section as shown by Figure 2.

Each casing is arranged with its front and rear walls Mtransverse to the ath of travel of the carriage,.while thesi e walls 15 are in the direction ofsaid path, while being inclined with respect to the 'axis of the air propeller 10. Each casing has thus a smaller mouth encircling the propeller and having substantially the saine size'as it, and a larger mouth which is elongated inv a. direction transverse to the path of travel of the apparatus. i

The casing 9 is sup orted on the carriage 7 by means of uprivlits 12 leaving a `free s ace in the rear of3 the frame 13 for the ree flow of air from the-mouth encirclin the air propeller 10.

Means may be provided in the larger mouth meshes of different size as shown in Fig. 4.

The carriage is driven in the known inanner by means of an electroinotor 17 actuating the shaft 18 of wheels 8.

When the propellers 10 are driven by the electromotor 11 a suction is produced within the casings 9, which acts to an even extent to obtain an even airl flow throughout its throughout 1their top mouths, with a stronger action in the space above the propeller, while through the mouths of the frames 13 air currents issue flowing around the casings 9, as shown by arrows in Figin known constructions and thus their ar# rangement in the carriage is made easy and the carriage may be more light, small and stiff than in known arrangements.

Figure 4 shows a drying room according to the present invention in which the casing carriage'is mounted to move near the room roof and the material is arranged below it, in the space enclosed within chain lines.

Of course many modifications may be introduced in the described apparatus without coming out of the spirit of the present invention as' defined by appended claims; more particularly the carriage may carry a single one or any number of. casings 9 each with a propeller, being only essential that said casing or casings provide an elongated mouth opposite the material and extending substantially throughout the space occupied by the same material.

l/Vhat I claim as my invention and desire to secure by UnitedStates Letters Patent l. In a drying ychamber,`a travelling carriage, one or more casings carried by `said carriage, each casing having its bottom shaped asa mouth, and air agitating means located in said mouths.

2. In a drying chamber, a travelling carriage, one or more funnel-shaped casings carried by said carriage, each casing having a mouth on its bottom, and air agitating means located in said mouths.

3. In a drying chamber, a travelling carriage, one or more casings having lateral walls diverging from the bottom of the same, each bottom providing a mouth, and air agitating means located in said mouth.

4. In a drying chamber in which the material to be dried is located in the middle zone between the roof and the floor, a travelling carriage, one or more casings carried by said carriage, each casing having a mouth opening in front of the space for the material and a second mouth smaller than the first one and\jQined thereto, and agitating means located in\said second mouth.

5. In a drying chamber in which the material to be dried is located in the middle zone between the roof and the floor, a travelling carriage, one or more casings carried by said carriage, each casing having a mouth elongated in a direction transverse to the path of travel of said carriage and opening in front of the space for the material, a second mouth smaller than the first one and joined thereto, and agitating means located l mouth.

In testimony whereof I have signed my name to this specification.

PILADE BARDUCCI. 

